If you want to improve the battery life on your Samsung Blackjack smartphone or Cingular 8525 (or other HTC devices), you can simply change your data connection to use GPRS instead of the default HSDPA. To make the change, do the following:
For a Samsung Blackjack
- Enter *#1546792*#
- Select option 3 "Network & Call Settings"
- Select option 5 "Network Mode"
- Select GSM
For the Cingular 8525, and other HTC devices, you have to download a utility called Hermes Tweaker. More information and further instructions can be found on this newsgroup posting.
Several Lanlogic employees have implemented this, and we are all very happy with the results. Big thanks to Vik Thairani for the tips.